With the True Flow intake system installed, we saw peak horsepower improve from 192 to 203, an increase of 11 ponies. Torque went from 218 lb-ft to 230 lb-ft, an increase of 12 lb-ft of torque. Furthermore, the True Flow intake improved the average power out put from 3,400 to 5,100 rpm by 8 hp and 12 lb-ft of torque. Keep in mind these values reflect the power losses mentioned above. An estimate of the flywheel horsepower assuming losses of 25 percent reflected in the measured values would give us an average increase of 10 hp and 15 lb-ft of torque with a peak increase of 14 hp and 15 lb-ft respectively.
The True Flow XDi intake setup looks pretty sweet and installs easily. Once installed, the truck had an aggressive sound when the throttle was opened up. Back on the dyno, a notable improvement in bottom-end power was recorded. At 2,800 rpm, torque rose from 138 to 168 and horsepower jumped from 106 to 115, which are noticeable gains when measured at the wheels. At around 4,000 rpm, the effects of the intake leveled off and matched factory power up to 5,750 rpm, where the test was shut down. Those bottom-end results, however, will do some good when towing, climbing, or during light-to-light acceleration. If you have a Silverado that needs a little more pep in its step, you should consider True Flow's XDi Intake.
True Flow Foam Air Filters - A critical part of the True Flow air intake system is its replacement foam air filter. True Flow Foam air filters combine huge dust holding capacity and great airflow capability. Fully reticulated (open pore) foam is a honeycomb of tiny, interlocking cells of uniform size, that create an impossible journey for dirt particles since there are no straight-through passageways. Each passageway (16 to 25mm long), is like hundreds of very small centrifugal/oil bath filters connected one to another. In this way, foam traps and holds the particles throughout the entire volume of foam.
True Flow Foam Air Filters - A critical part of the True Flow air intake system is its replacement foam air filter. True Flow Foam air filters combine huge dust holding capacity and great airflow capability.